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Wan, Guo-Xing,Cao, Yu-Wen,Li, Wen-Qin,Li, Yu-Cong,Zhang, Wen-Jie,Li, Feng Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.19
A meta-analysis incorporating 34 case-control studies from 19 articles involving 12,197 cases and 13,488 controls was conducted to assess the effects of three genetic variants of Toll-like receptor 9 (TLR9): rs187084, rs352140, and rs5743836. Studies on associations between TLR9 polymorphisms and cancer risk were systematically searched in electronic databases. The reported odds ratios (OR) and 95% confidence intervals (CI) were pooled to assess the strength of any associations. The results showed that the rs187084 polymorphism was significantly associated with an increased risk of cancer (CC vs TC+TT: OR=1.14, 95% CI=1.02-1.28), specifically cervical cancer (C vs T: OR=1.19, 95% CI=1.05-1.34; TC vs TT: OR=1.32, 95% CI=1.10-1.58; CC vs TT: OR=1.31, 95% CI=1.03-1.68; CC+TC vs TT: OR=1.32, 95% CI=1.11-1.56), and that this association was significantly positive in Caucasians (CC vs. TC+TT: OR=1.18, 95% CI=1.01-1.38). The rs352140 polymorphism had a protective effect on breast cancer (GA vs GG: OR=0.77, 95% CI=0.66-0.89), whereas the rs5743836 polymorphism was likely protective for digestive system cancers (CC+TC vs TT: OR=0.81, 95% CI=0.66-0.98). In conclusion, our results suggest that the rs187084 polymorphism may be associated with an elevated cancer risk, whereas polymorphisms of rs352140 and rs5743836 may play protective roles in the development of breast and digestive system cancers, respectively. From the results of this meta-analysis further large-scale case-control studies are warranted to verify associations between TLR9 polymorphisms and cancer.
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Guo-Xing Wan,Yu-Wen Cao,Wen-Qin Li,Yu-Cong Li,Feng Li 한국유방암학회 2014 Journal of breast cancer Vol.17 No.2
Purpose: Catechol-O-methyltransferase (COMT) enzyme plays acentral role in estrogen-induced carcinogenesis. Emerging evidencefrom association studies has revealed that the functionalVal158Met polymorphism (rs4680 G>A) of the Catechol-Omethyltransferasegene (COMT) has been implicated in susceptibilityto breast cancer in the Chinese population, while resultsof individual published studies remain inconclusive and inconsistent. To assess this association in the Chinese population, a meta-analysis was performed. Methods: Eligible studies weresearched on MEDLINE, Embase, Cochrane Library, China NationalKnowledge Infrastructure, and the Chinese BiomedicineDatabase. Odds ratios (ORs) with their corresponding 95% confidenceintervals (CIs) were pooled to assess the association betweenCOMT polymorphisms and the risk of breast cancer usingRevMan 5.2 and Stata 12.0 software. Results: The meta-analysisincluded 14 eligible studies, with a total of 4,626 breast cancercases and 5,637 controls. Overall, the COMT Val158Met polymorphism(rs4680 G>A) was significantly associated with an increasedrisk of breast cancer in several genetic models (A/A vs. G/G: OR, 1.59, 95% CI, 1.12–2.27; A/A vs. G/A+G/G: OR, 1.62,95% CI, 1.14–2.29; A vs. G: OR, 1.15, 95% CI, 1.00–1.32), and asubgroup analysis according to menopausal status showed thatthis association was especially evident among premenopausalChinese women (A/A vs. G/G: OR, 1.87, 95% CI, 0.99–3.54; A/Avs. G/A+G/G: OR, 1.94, 95% CI, 1.03–3.63). Conclusion: The resultsof this meta-analysis indicated that COMT Val158Met variantscontribute to breast cancer susceptibility in the Chinesepopulation, particularly among premenopausal women.
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Ao Di,Wong Pak Kin,Huang Wei,Mei Xing Tai,Cao Yu Cong,Zhao Jing 한국자동차공학회 2020 International journal of automotive technology Vol.21 No.6
The assessment of vehicle dynamic comfort to human body vibration varies from person to person. Even though the dynamic comfort rating can be obtained by placing measurement devices over the cabin, passengers may have dissimilar sensations. For many car manufacturers, both subject and objective measurements are used together at development of new cars. To effectively assess the dynamic comfort of vehicle, this research explores the correlation between the objective measurement of the whole body vibration, hand-transmitted vibration and subjective assessment. The whole body vibration is measured from the backrest, seat surface and vehicle floor, whereas the hand-transmitted vibration is measured from the steering wheel. Four different vehicles are driven at various speeds on five types of pavements. Both simple linear regression and polynomial regression models based on Stevens’s power law from psychophysics are built to correlate the subjective and objective data. The regression results show that (1) the seat surface is more reliable than other positions for assessing the human body vibration; (2) the hand transmitted vibration on rough roads is more trustful for dynamic comfort evaluation than on smooth roads; (3) the overall dynamic comfort value is the most reliable index for dynamic comfort evaluation.
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